import type { CSSObject as CSSObject_base, CSSInterpolation } from "@emotion/serialize";
export type { CSSInterpolation };
export interface CSSObject extends CSSObject_base {
    /** https://emotion.sh/docs/labels */
    label?: string;
}
export interface Css {
    (template: TemplateStringsArray, ...args: CSSInterpolation[]): string;
    (...args: CSSInterpolation[]): string;
}
import type { CxArg } from "./tools/classnames";
export type { CxArg };
export declare type Cx = (...classNames: CxArg[]) => string;
export declare function matchCSSObject(arg: TemplateStringsArray | CSSInterpolation): arg is CSSObject;